I've been playing bass for decades but when it comes to discussions about Ohms, I just go all mush-brained. I really need to learn about this. Anyway, here's my question... I own two GK heads - a 700RBII and a 1001RBII. I play them thru a 2x10 Eden cab (4 ohms). This sounds good and is powerful enough for my main situation - playing at church. I want to be able to add more speakers when I need to push more air at larger venues. I have another 2x10 cab that is also 4 ohms. Can I plug both cabs into the GK heads to increase my volume? Can the GK heads handle two 4 ohm cabs? I don't want to damage my heads or the cabs by trying something that I shouldn't. I also have a 6x10 cab which works great but it's easier to add another 2x10, if I can rather than hauling the Goliath around.